3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=array(); while (true) $a[]=microtime(); var_dump($a);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.101.8880.14342.39
7.1.221.6180.10737.69
7.1.211.6990.07928.69
5.6.380.0790.26078.70
preferences:
27.59 ms | 401 KiB | 5 Q